期刊
JOURNAL OF CHEMICAL THEORY AND COMPUTATION
卷 17, 期 3, 页码 1755-1770出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jctc.0c01095
关键词
-
资金
- ENEA
- Italian National Agency for New Technologies, Energy and Sustainable Economic Development
The study introduces large-scale coarse-grained models for filler/polymer interfaces based on carbon black (CB) and polyethylene (PE) and validates their computational efficiency. The molecular models allow a description of PE chain conformational behavior adsorbed on CB primary particles. The proposed method opens up the possibility of a computational screening for optimal polymer/fillers interface and interphase engineering.
In the present study, we propose, validate, and give first applications for large-scale systems of coarse-grained models suitable for filler/polymer interfaces based on carbon black (CB) and polyethylene (PE). The computational efficiency of the proposed approach, based on hybrid particle-field models (hPF), allows large-scale simulations of CB primary particles of realistic size (similar to 20 nm) embedded in PE melts. The molecular detailed models, here introduced, allow a microscopic description of the bound layer, through the analysis of the conformational behavior of PE chains adsorbed on different surface sites of CB primary particles, where the conformational behavior of adsorbed chains is different from models based on flat infinite surfaces. On the basis of the features of the systems, an optimized version of OCCAM code for large-scale (up to more than 8 million of beads) parallel runs is proposed and benchmarked. The computational efficiency of the proposed approach opens the possibility of a computational screening of the bound layer, involving the optimal combination of surface chemistry, size, and shape of CB aggregates and the molecular weight distribution of the polymers achieving an important tool to address the polymer/fillers interface and interphase engineering in the polymer industry.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据